Welcome to MyGURPS, a page full of resources and information for the GURPS® Fourth Edition roleplaying game from Steve Jackson Games.
Herein you'll find some of the house rules that I use (and heartily recommend) for the newest edition of GURPS, various resources and articles that you might find useful, new data files for the GURPS Character Assistant software, and some of the GURPS books (and other Steve Jackson Games products) that I've reviewed on RPGnet. You'll also find resources for other games near the bottom of the page. And if you'd like to know more about me, click here!
To remove or redisplay this introductory text, click on the MyGURPS logo at the very top of the page. To view or hide the content in a given section, just click on its header. Enjoy the site!
Fourth Edition not only streamlined GURPS, it fixed a lot of rules and exceptions that were unbalanced or otherwise broken. Of course, even an unashamed fanatic like myself has to admit that a few things can still use some tweaking. All of my house rules here have been extensively playtested and have had a positive effect on the system. Click on the rule if you want to know the details, or the rationale behind it.
Many of these house rules are available in the GCA Files section below if you want to incorporate them into your own game.
1. Perception and Will are separate from IQ.
Both Per and Will are their own attributes. They start at 10, and can be raised or lowered for 5 points/level. IQ is unchanged, at 20 points/level.
2. Reducing the value of "flavor" traits.
The values of all age-related traits (Extended Lifespan, Longevity, Self-Destruct, Short Lifespan) are halved, except for Unaging, which costs 5 points. Terminally Ill no longer exists, except when granted via an Affliction.
3. Arm DX, Arm ST, and Regrowth are cheaper.
Arm DX costs 9 or 12 points for one or two arms. Arm ST costs 3, 4, or 6 points for one, two, or three arms. Regrowth costs 10 points.
4. Control can be used normally to provide DR.
Each level of Control can be used to give people in your area of effect DR 1 versus appropriate attacks. A successful, IQ-Based Power Block will double any defensive use of Control for one attack.
5. Costs Fatigue is worth -10%/level.
Costs Fatigue is worth -10% per level, to a maximum of -40%. If you have an advantage that would normally remain on indefinitely, you can take "Costs 1 FP per 10 seconds" for -20% or "Costs 1 FP per second" for -40%.
6. Armor Divisor (100) is available.
Armor Divisor (100) is available as a +300% enhancement. This is a fair price in comparison to Cosmic (Irresistable Attack), which is more effective but is also stopped by Cosmic DR. Hardened DR reduces both enhancements normally.
7. Various new modifiers for traits.
While building characters and helping others to do so, I've come up with several new "special modifiers" for various advantages, as well as a new advantage (Indefatigable). Unlike the other house rules, this will load as a separate page -- it's too long to do inline.
8. Enthrallment skills require an Unusual Background.
For balance purposes, an Unusual Background is required to learn and use the four Enthrallment skills. This costs 5 points, plus 5 points for each level of Charisma (maximum 30 points.)
9. Temporary Enchantment fixed.
When using the Temporary Enchantment spell (from GURPS Fantasy and Magic), multiply the energy cost of the enchantment by (Uses)/(Uses+6), rounding up. So a wand that can cast Fireball 30 times costs (30/36), or 84% of the normal energy cost to enchant.
10. Slams use ST when possible.
Replace "HP" with "ST" for living beings in the formula for calculating the damage from slams. Use HP for inanimate objects and all other collisions or falls. If the type of Strength matters, use Striking ST.
11. (Psi) Static comes in two levels.
Resistible is no longer a limitation. Instead, it is the first level of Static, with a cost of 15 points. The normal advantage, as written, is the second level.
12. Changes to Trading Points for Money and Signature Gear.
The starting cash you get by trading in points now scales up (using a similar progression to Wealth) and is based on your starting wealth, not the campaigns. This makes it a fair deal for wealthy characters while reducing abuse from poor ones. Signature Gear no longer provides funds; it simply adds plot protection to gear that you've already purchased. Because there's a table involved, this house rule is located on its own page.
13. Streamlined Languages for Modern Games.
In games set on modern Earth, 99% of the people will speak one of the following languages: Arabic, Bantu (Southern African), Berber (Northern African), Cantonese/Wu (Chinese), Dutch/Afrikaans, English, Farsi/Kurdish (Iranian), Finnish/Hungarian, French, Gaelic/Welsh, German/Yiddish, Greek, Hebrew, Hindi-Urdu (Indian/Pakistani), Indonesian/Malay, Italian/Romanian, Japanese, Korean, Latin, Mandarin (Chinese), Navajo, Norwegian/Swedish/Danish, Polish/Czech, Russian/Ukranian, Spanish/Portugese, Thai/Burmese, Turkish/Mongol, or Vietnamese/Cambodian. A slash means that the languages are closely enough related that, for simplified game purposes, they count as a single language.
14. Combat, Combat Art, and Combat Sport Skills Are Techniques.
When you learn a Combat skill, Combat Art skill, or Combat Sport skill (see p. B184 for details), you may buy up the other two versions as an Average technique defaulting to your skill-3. For example, if you know Karate Art at DX+2, you know Karate at DX-1 and can buy it up to DX+2 level for 3 points.
15. Cheap Firearms.
Cheap guns are -60% to Cost (-0.6 CF). They have -1 Acc, -1 HT, and -1 Malf. If you aren't using Malfunctions (p. B407), treat this as "16 is always a failure, and 17 is always a critical failure."
Alternatively, if you don't mind extra detail, the firearm's HT is unchanged. However, whenever it would normally get a bonus to a HT roll -- like the HT+4 roll to resist Slime, Sand, and Equipment Failure (p. B485) -- it rolls against straight HT, no bonus.
Note for My Players: I also have a minor house rule about Dependents and Enemies. They may be only taken with a Frequency of "6 or less" or "9 or less" without special GM permission.
Retired House Rules
Several of my house rules have been retired due either to them being incorporated as official rules or to new rules which solve the same problem in an acceptable way. I'm glad that this section exists! It means that the system is being constantly improved as it grows. Retired house rules include those for Gunslinger, Magery 0, and Off-Hand Weapon Training.
The good Dr. Kromm created the Dungeon Fantasy series to show that GURPS can truly handle any genre -- even the classic dungeon crawl. The combination of a new-school system with old-school gaming worked surprisingly well. I'm honored to have contributed to the series officially, and I'd like to continue contributing in this small section of MyGURPS.
Much of the following is now available in a handy PDF format, along with other rulings and additions posted to the forums. Basically, this is the file that I print out for my own games. Each section is labeled with the Dungeon Fantasy book for which it acts as an addendum.
1. Splitting IQ from Per/Will in Dungeon Fantasy.
One of my most popular house rules (above) is the one separating Will and Per from IQ. It's rather self-explanatory, except when you're trying to use premade templates . . . which is what Dungeon Fantasy is all about. So here are some guidelines for tweaking the templates to preserve point balance while fixing the IQ issue.
2. Alchemy (and Alchemists) in Dungeon Fantasy.
Here I expand the rules for alchemy in Dungeon Fantasy, creating a middle road between "NPCs make real elixirs in town" and "PCs use Gizmo for a potion that must be used immediately." In doing so, it makes a new character type possible: The Alchemist (a lens for the Artificer template).
3. New Template: Seventh Son.
You are the seventh son of a seventh son (or daughter -- the "son" part is just tradition), a blessed wanderer, or a peasant adventurer. You don't have the specialized training that any of the other templates have, but you're quick and clever and the fates are definitely watching out for you. This template is good for those looking to play an "underdog" without actually sacrificing survivability.
This template was created by aesir23, not me. I offered suggestions and feedback and made a few tweaks.
4. Splitting IQ from Per/Will in Action.
Okay, this doesn't exactly belong here, but I know that gamers associate the Action line with the Dungeon Fantasy line closely, due to the very similar design and approach of the two. So here is the Action breakdown of how to split Per and Will from IQ for each template.
As my first true series of GURPS books, the Monster Hunters line is something I'm particularly proud of. Hopefully, the following resources and musings will help anyone trying to run their own game of hunters vs. The Enemy. Be sure to also check the GCA Files section of this site (below) for Monster-Hunters-related GDFs.
1. Splitting IQ from Per/Will in Monster Hunters.
As for Dungeon Fantasy and Action (see the section above), this article will be of great help to anyone who uses my house rule about splitting IQ from Will and Per. Here, I break down the necessary changes for all of the primary templates from Champions and Sidekicks.
2. Sample Monster-Hunting Team.
Whether you're a GM looking for some grab-n-go characters for a one-shot, or a gamer trying to decide whether the Monster Hunters series is right for you, these premade monster hunters are just what you're looking for. This five-person team of champions includes character sheets (in both PDF and GCA format), full loadouts, and just enough background and overview for the players to sit down and start using them.
3. Ritual Path Magic FAQ.
An open-ended, flexible system like Ritual Path magic is bound to have some questions come up from time to time. For the most part, these should be decided upon between the player and GM -- but a few questions are either so universally applicable or have come up frequently enough that I've collected them here.
4. Energy Accumulation Auto-Calculator.
Does your caster need to make hundreds of energy accumulation rolls for dozens of different spells? Now you can avoid all of that painful dice rolling! Just enter some basic information and this page will show you the details for each ritual you attempted to cast.
5. Clues and Deductions Worksheet (PDF).
I'm quite proud of the investigation rules introduced in The Mission, as they allow both players and characters a chance to figure out what's going on. However, they do involve many skill rolls, and it can be tricky for the GM to keep track of it all. This worksheet makes the GM's job easier, by providing a single place to keep track of each hunter's deduction roll and current clue bonus, along with all of the clues that are either waiting to be revealed or have already been discovered.
This website is administered by Reverend Pee Kitty [About Me]. All original content is ©Copyright 2005-2019 Reverend Pee Kitty.
The material presented here is my original creation, intended for use with the GURPS system from Steve Jackson Games. This material is not official and is not endorsed by Steve Jackson Games. GURPS is a registered trademark of Steve Jackson Games, and the art here is copyrighted by Steve Jackson Games. All rights are reserved by Steve Jackson Games. This material is used here in accordance with the SJGames online policy.